Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 44, Issue 17, Pages 9071-9079Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2018.05.047
Keywords
Hydrogen jet; Dispersion; Ignitability; High-pressure; Concentration fluctuation; Non-steady characteristics
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Funding
- New Energy and Industrial Technology Development Organization (NEDO) in Japan, under the fund of Research and Development of Technology for Hydrogen Utilization
- NEDO
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Hydrogen gas concentrations and jet velocities were measured downstream by a high response speed flame ionization detector and PIV (Particle Image Velocimetry) in order to investigate the characteristics of dispersion and ignitability for 40-82 MPa high pressurized hydrogen jet discharged from a nozzle with 0.2 mm diameter. The light emitted from both OH radical and water vapor species yielded from hydrogen combustion, ignited by an electric spark, were recorded by two high speed cameras. From the results, the empirical formula concerning the relationships for time-averaged concentrations, concentration fluctuations and ignition probability were obtained to suggest that they would be independent of hydrogen discharge pressure. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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